An elevation is different. It shows the face of something, or perhaps more correct, the projection of an object/s to a plane. But my testing suggests it produces SECTIONS, not elevations.
Yes, you can use abbreviations in tables and figures. All abbreviations used in tables and figures should be defined in the table note or figure caption, respectively, even though the abbreviations will be also be defined in the text if they are used there.
Some general terms and strategies can be helpful when using figures: 1  When a paper contains both tables and figures, number each separately; e.g.: Table 1, Figure 1, Table 2.  Figure number: Figures are numbered using Arabic numerals consecutively throughout the paper; e.g.: Figure 1, Figure 2, etc.